Document Detail


Effect of ICI 198,615, SK+F 104,353, MK-571 and CGP45715A on cysteinyl leukotriene-induced responses in guinea-pig heart.
MedLine Citation:
PMID:  1871378     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Peptidoleukotrienes (LTs), LTC4 and LTD4, cause potent vasoconstriction and myocardial depression in a range of species including man. The recent availability of specific LTD4 antagonists has allowed the evaluation of LT involvement in disease states and the characterisation of LT receptors in the airways. We decided to study the actions of four LT antagonists; ICI 198,615, SK + F 104,353, MK-571 and CGP45715A on LTD4-, LTC4- and U46619-induced effects in the coronary vasculature and on cardiac contractility in the guinea-pig isolated heart. We found a difference in the actions of the antagonists in the GP heart compared with the lung. ICI 198,615 retained its selectivity towards LTD4 whereas SK + F 104,353 antagonised both LTD4 and LTC4. MK-571 and CGP45715A had a non specific action against the LTs. Our results also indicated a direct action of the LTs on cardiac contractility which was not associated with the constriction of the coronary vasculature. These studies indicate that if the leukotrienes are involved in cardiac disease antagonists specific for the peptidoleukotrienes may be of therapeutic benefit in many of the disease states of the heart.
Authors:
J D McLeod; P J Piper
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Prostaglandins     Volume:  41     ISSN:  0090-6980     ISO Abbreviation:  Prostaglandins     Publication Date:  1991 Apr 
Date Detail:
Created Date:  1991-09-13     Completed Date:  1991-09-13     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0320271     Medline TA:  Prostaglandins     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  395-406     Citation Subset:  IM    
Affiliation:
Pharmacology Department, Hunterian Institute, Royal College of Surgeons, London.
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MeSH Terms
Descriptor/Qualifier:
Animals
Benzopyrans / pharmacology
Coronary Vessels / drug effects*
Dicarboxylic Acids / pharmacology
Guinea Pigs
Indazoles / pharmacology
Male
Myocardial Contraction / drug effects*
Propionates / pharmacology
Prostaglandin Endoperoxides, Synthetic / antagonists & inhibitors,  pharmacology
Quinolines / pharmacology
SRS-A / antagonists & inhibitors*,  pharmacology
Vascular Resistance / drug effects
Vasoconstrictor Agents / antagonists & inhibitors,  pharmacology
Chemical
Reg. No./Substance:
0/Benzopyrans; 0/Dicarboxylic Acids; 0/Indazoles; 0/Propionates; 0/Prostaglandin Endoperoxides, Synthetic; 0/Quinolines; 0/SRS-A; 0/Vasoconstrictor Agents; 104448-53-5/ICI 198615; 107023-41-6/pobilukast; 115104-28-4/verlukast; 125617-94-9/iralukast

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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